Date: Tue, 13 Mar 2012 20:44:43 +0100 From: Dimitry Andric <dim@FreeBSD.org> To: Alexandre Martins <alexandre.martins@netasq.com> Cc: Konstantin Belousov <kostikbel@gmail.com>, freebsd-current@freebsd.org Subject: Re: Double free() in libc or gdb ? Message-ID: <4F5FA3AB.9000102@FreeBSD.org> In-Reply-To: <201203131108.43815.alexandre.martins@netasq.com> References: <201203121750.36937.alexandre.martins@netasq.com> <20120312175555.GE75778@deviant.kiev.zoral.com.ua> <201203131108.43815.alexandre.martins@netasq.com>
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On 2012-03-13 11:08, Alexandre Martins wrote: > On Monday 12 March 2012 18:55:55 Konstantin Belousov wrote: >> On Mon, Mar 12, 2012 at 05:50:33PM +0100, Alexandre Martins wrote: ... >>> I have the libc compilled with "MALLOC_DEBUG" flag to detect double free. >>> When i run this piece of code (attached file) thought GDB, i have this >>> assertion : >>> >>> Assertion failed: ((run->regs_mask[elm] & (1U << bit)) == 0), function >>> arena_run_reg_dalloc, file /usr/src/lib/libc/stdlib/malloc.c, line 2543. I have committed a fix for this assertion (actually a double free) in r232934. Can you please update to that revision, rebuild your gdb, and try again?
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